Cited by 95Rabies epidemiology and controlRNA Interference and Gene DeliveryVirology and Viral Diseases

Advances in RNA vaccines for preventive indications: A case study of a vaccine against rabies

Open access
Armbruster, Nicole, Jasny, Edith, Petsch, Benjamin·2019·Vaccines

Abstract

There is a global need for effective and affordable rabies vaccines, which is unmet by current vaccines due to limitations in their production capacities, required administration schedules, storage requirements, and cost. Many different experimental approaches previously used for bacterial and viral vaccines have been applied to rabies, but with variable success. One of the most promising new concepts is the use of messenger RNA (mRNA) in encoding the main rabies virus antigen, the envelope glycoprotein (RABV-G). CureVac has applied their proprietary technology platform for the production of mRNA to this problem, resulting in the rabies vaccine candidate CV7201. Following preclinical studies in mice and pigs showing that CV7201 could induce neutralizing immune responses that protected against rabies virus, different dosages and routes of administration of CV7201 were tested in a phase 1 human study. This clinical study proved that mRNA vaccination was safe and had an acceptable reactogenicity profile, but immune responses depended on the mode of administration, and they did not unequivocally support CV7201 for further development as a prophylactic vaccine with this particular formulation. Further, preclinical studies using RABV-G mRNA encapsulated in lipid nanoparticles (LNPs) showed an improved response in both mice and nonhuman primates, and these encouraging results are currently being followed up in clinical studies in humans. This review summarizes the recent advances in mRNA vaccines against rabies.

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  • Preclinical studies showed that protecting the mRNA by lipid encapsulation significantly enhanced the response to CV7201.

    “preclinical studies showed that protecting the mRNA by lipid encapsulation significantly enhanced the response to the CV7201 [9], [24].”

    From Proof-of-concept of a low-dose unmodified mRNA-based rabies vaccine formulated with lipid nanoparticles in human volunteers: A phase 1 trial (2021) · cites this paper as [24]

    Section 3 reports that lipid-nanoparticle encapsulation substantially increased antibody responses to rabies-glycoprotein mRNA in mice compared with plain mRNA. But Section 2.1 identifies CV7201 as a protamine-formulated vaccine, while Section 3 identifies the LNP formulation as CV7202. The enhanced response is therefore supported for the LNP-formulated rabies mRNA, not for CV7201 as named in the claim. (LLM, conf=0.88)

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Authors
Armbruster, N., Jasny, E., & Petsch, B.
Affiliations
CureVac (Germany) (DE)
Corresponding author
Petsch, Benjamin
Venue
Vaccines
Publisher
MDPI AG
Published
2019-09-27
Volume
7
Issue
4
Pages
132
ISSN
2076-393X (ISSN-L)
OpenAlex
W2976537775
Cited by
95
References
39
Citations by year
2026: 2 · 2025: 11 · 2024: 18 · 2023: 10 · 2022: 24 · 2021: 19 · 2020: 11
FWCI
2.15
Type
journal article
Language
en
Open access
Locations
  • Vaccines (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › Rabies epidemiology and control
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Health Sciences › Medicine › Epidemiology › Virology and Viral Diseases
Keywords
rabies vaccine, mRNA vaccines, rabies virus glycoprotein, lipid nanoparticles, prophylactic vaccination, neutralizing antibodies, route of administration, non-human primates

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